摘要
In this paper,a two-dimensional(2 D)direction-of-arrival(DOA)estimation algorithm with increased degrees of freedom for two parallel linear arrays is presented.Being different from the conventional two-parallel linear array,the proposed two-parallel linear array consists of two uniform linear arrays with non-equal inter-element spacing.Propagator method(PM)is used to obtain a special matrix which can be utilized to increase the virtual elements of one of uniform linear arrays.Then,the PM algorithm is used again to obtain automatically paired elevation and azimuth angles.The simulation results and complexity analysis show that the proposed method can increase the number of distinguishable signals and improve the estimation precision without increasing the computational complexity.
基金
supported by the National Natural Science Foundation of China(51877015,U1831117)
the Cooperation Agreement Foundation by the Department of Science and Technology of Guizhou Province of China(LH[2017]7320,LH[2017]7321,[2015]7249)
the Innovation Group Major Research Program Funded by Guizhou Provincial Education Department(KY[2016]051)
the Foundation of Top-notch Talents by Education Department of Guizhou Province of China(KY[2018]075)
PhD Research Startup Foundation of Tongren University(trxy DH1710)。
